| Tm3+掺杂硅酸镓镧(La3Ga5SiO14)晶体的结构与光学性能研究 |
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| 引用本文： | 牛 艺,王增梅,刘英才,尹衍升,袁多荣.Tm3+掺杂硅酸镓镧(La3Ga5SiO14)晶体的结构与光学性能研究[J].物理学报,2007,56(5):2968-2973. |
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| 作者姓名： | 牛 艺 王增梅 刘英才 尹衍升 袁多荣 |
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| 作者单位： | (1)山东大学晶体材料国家重点实验室,济南 250100; (2)中国海洋大学材料科学与工程研究院,青岛 266100 |
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| 基金项目： | 国家自然科学基金(批准号：50242008)和“长江学者奖励计划"资助的课题. |
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| 摘 要： | 利用X射线粉末衍射确定了Tm3+掺杂硅酸镓镧(La3Ga5SiO14,LGS)晶体的晶体结构;运用DICVOL91程序计算了该晶体不同部位的晶胞参数;测定了Tm：LGS晶体的室温吸收谱和470nm光激发下的发射光谱;根据Judd-Ofelt理论拟合了Tm3+的三个晶场调节参数Ωt(t=2,4,6),分别为2.694×10-20cm2,1.842×10-20cm2,0.030×10-20cm2;计算了各个能级跃迁的谱线强度、振子强度、吸收截面等,进而计算了3H4和3F4态的自发跃迁概率、辐射寿命、荧光分支比和积分发射截面,并对结果进行了分析.
关键词：
Tm：LGS晶体
吸收谱
Judd-Ofelt理论
光谱参数
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| 关 键 词： | Tm：LGS晶体 吸收谱 Judd-Ofelt理论 光谱参数 |
| 文章编号： | 1000-3290/2007/56(05)/2968-06 |
| 收稿时间： | 2006-09-27 |
| 修稿时间： | 09 27 2006 12:00AM |
Structure and spectroscopic properties of Tm3+ doped langasite (La3Ga5SiO14) crystal |
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| Niu Yi,Wang Zeng-Mei,Liu Ying-Cai,Yin Yan-Sheng and Yuan Duo-Rong.Structure and spectroscopic properties of Tm3+ doped langasite (La3Ga5SiO14) crystal[J].Acta Physica Sinica,2007,56(5):2968-2973. |
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| Authors: | Niu Yi Wang Zeng-Mei Liu Ying-Cai Yin Yan-Sheng and Yuan Duo-Rong |
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| Institution: | 1. Institute of Material Science and Engineering, Ocean University of China, Qingdao 266100, China; 2. State Key Lab . of Crystal Materials , Shandong University , Jinan 250100, China |
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| Abstract: | The structure of Tm3+-doped langasite(La3Ga5SiO14,abbreviated as LGS) crystal has been measured by XRD. The crystal lattice parameters were calculated with DICVOL91 program. The absorption spectra and emission spectra (excitated under 470nm) of Tm：LGS single crystal was measured at room temperature. And the optical parameters, such as transition-line intensity, oscillator strength and absorption section were calculated by using Judd-Ofelt theory. The three intensity parameters Ωt(t=2,4,6) were fitted to be 2.694×10-20cm2,1.842×10-20cm2,0.030×10-20cm2,respectively. The lifetime, branching ratio and integrated stimulated-emission cross section were obtained and the results were discussed. |
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| Keywords: | Tm:LGS crystal absorption spectra Judd-Ofelt theory spectral parameters |
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